| 摘要 |
PCT No. PCT/SU85/00023 Sec. 371 Date Oct. 17, 1986 Sec. 102(e) Date Oct. 17, 1986 PCT Filed Mar. 27, 1986 PCT Pub. No. WO86/05728 PCT Pub. Date Oct. 9, 1986.A reamer is provided with teeth (3) having a cutting portion (4) and a smoothing portion (5), wherein at least part of the rear surface of the latter portion is fashioned as a strip. Each tooth (3) has its front angle smoothly decreasing in the direction away from the head portion (6) of the reamer. |
